| Feature | 2004 | 2005 | 2006 | 2007 |
|---|
| MSRP | 49,995 | 51,995 | 51,395 | TBD |
| Engine | LS6 | LS6 | LS2 | LS2 |
| Colors Available | Black/Silver | Black/Silver/Stealth Gray/ Redline | Black/ Silver/ StealthGray/ InfraRed | Black/ Silver/ InfraRed/ Thunder Gray |
| Interior Color | Tan/Ebondy | Ebony/tan/Gray | Gray/Tan/Ebony | Gray/Tan/Ebony |
| Sunroof | Option | Option | Standard | Standard |
| Stock Tires | GoodYear F1 Runflats | Goodyear F1 Runflats | Goodyear RS-All Season (F1 tires additional option) | P245/45R18-96V Goodyear RSA, extended mobility tires |
| Improved Diff | Replacement part only | Replacement part only | From factory | TBD |
| Strut Tower Brace | Yes- low | Yes- low | Yes- Tall | TBD |
| Gas Guzzler Tax | No | Yes | No | TBD |
| Wheel Center Cap Color | silver | Silver | Black | TBD |
| Cruise Controls | On Wheel | On Wheel | On Stalk | TBD |
| GM Badge | No | No | yes (behind front wheel) | TBD |
| XM/onstar antenna | Separate XM and onstar | Combined XM/onstar | Combined XM/onstar | Combined XM/onstar |
| Steering Wheel Radio Controls | No | No | yes | TBD |
| XM Nav Traffic | No | Maybe (introduced mid model year...) | yes | Yes |
| Passenger Air bag sensor | No | Yes | Yes | Yes |
| Free 2 year Nav DVD upgrade | No | No | Yes | Yes |
| Rolled inner Fender | Yes | No | No | TBD |
| Heavier Rear Cradle Bushings | Supplemental only | Supplemental only | Improved/ integrated | TBD |
| Transmission changes | N/A | N/A | Redesigned shift lever and gearset with carbon reinforced gears in 1st, 2nd and 3rd for improved shift feel and crispness | <<<< |